This unique Crystal Press was designed by John O'Neil, watchmaker, who was tired of having to take watch bands apart in order to place a watch into his BB crystal press to snap the back on after estimating the repair or when changing a battery.
The press was designed to use the dies from the BB crystal press, and was made to accept large dies for today's bigger watches. Any die with a 10mm hole that is at least 1/2" deep will fit this press.
Cas-Ker Co. is a proud distributor of John's Press, an American made Watch Case and Crystal Press that a watchmaker can use with the watch band still on the watch. Ingenious!